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Number Theory
Page 3
Questions (6,220)
How many positive three-digit integers with each digit greater than 4 are divisible by 6??
6 answers
asked by
Zach Bringer
3,634 views
Find the smallest positive integer not relatively prime to 2015 that has the same number of positive divisors as 2015.
11 answers
asked by
david
5,447 views
Create an odd number that satisfy the following clues
_ Thousand digit is twice ones digit _ Ten thousand digit is three times
5 answers
asked by
Passang
1,350 views
Find the smallest prime divisor of 5^23+7^17?
7 answers
asked by
Ankita singh
2,796 views
If m and p are positive integers and (m + p)x m is even, which of the following must be true? Would it be: (A) if m is odd, then
4 answers
asked by
Carol Kelly
1,756 views
Prove that a^3 ≡ a (mod 3) for every positive integer a.
What I did: Assume a^3 ≡ a (mod 3) is true for every positive
4 answers
asked by
Kid
3,305 views
Lucy is thinking of a number. The number is greater than two hundred twenty-five. Her number is less than 2 hundreds 2 tens 7
12 answers
asked by
Sahara
4,174 views
What is the greatest prime number you must consider to test whether 5141 is prime?
5 answers
asked by
timothy
7,384 views
Gord was looking at these multiples of 9: 18, 45, 63, 72, 81, 108, 216. He claimed that the sum of the digits in any multiple of
51 answers
asked by
Please help, im confused
1,721 views
How many times does a palindromic number appear on a 12 hour digital clock between 12 midnight and 12 noon?
10 answers
asked by
Charles
5,760 views
A series of 288 consecutive odd integers has a non-zero sum that is a perfect fourth power. Find the smallest possible sum for
9 answers
asked by
Anonymous
2,781 views
Numbers are drawn from the 27 integers 1 to 27. At least how many number(s) is / are drawn at random to ensure that there are
5 answers
asked by
Natni
2,070 views
Given that= Y(multiples of 3 less than 20),find the number proper subset of Y?
5 answers
asked by
Michael
884 views
What prime number am I?
I have 3 prime factors Each prime factor is a different number I am a multiple of 10 I am less than 50
6 answers
asked by
Matt
1,557 views
maria thinks of a number between 30 and 35. it has a greater number of ones than tens. what is the number ?
6 answers
asked by
peggy
2,806 views
Is square root of 16/4 an irrational number
4 answers
asked by
Bob
988 views
The tens digit of a certain number is five more than the units digit. The sum of the digits is 9. Find the number.
5 answers
asked by
Arya
5,861 views
Marcy found two numbers that satisfy the following rules:
● Has one prime number ● Has one composite number ● The sum of
5 answers
asked by
big boy
585 views
how many whole numbers are between the square root of 8 and the square root of 80?
6 answers
asked by
kiran
2,868 views
Identify al the sets to which the number 3.1214122144...belongs.
A.) Rational** B.) Irrational C.) Integer, Rational D.) Whole
5 answers
asked by
WOW
3,893 views
The odometer on a car shows 26962 km. Notice that this number is a palindrome. After the car has travelled two hours at a
6 answers
asked by
Sandy
3,308 views
Which numbers are the first 15 composite natural numbers as products of their prime factors
4 answers
asked by
Anonymous
1,014 views
what is the prime factorization of 95
7 answers
asked by
kutftf
1,283 views
You have a spinner labeled 1-10, what are the odds of you getting a prime number?
4 answers
asked by
Anne st cyr
1,907 views
Wich number is equivalent to 0.45 repeating
1/45 5/11 4/5 1/4
7 answers
asked by
Anonymous
1,908 views
True or false. If two numbers are relatively prime,both numbers are prime. Please help ASAP!!! :( Give an example!!! :)
5 answers
asked by
Andrea
1,971 views
Consider the following theorem: “If n is an even integer, then n + 1 is odd.” Give a Proof by Contradiction of this theorem.
4 answers
asked by
Jacqueline
1,430 views
The smallest positive integer value of n for which 168 n isa square number
4 answers
asked by
mary
482 views
Given that the HCF of a pair of different numbers is 8, find the two numbers if both numbers are less than 20
4 answers
asked by
Pepsi Zero Sugar
790 views
What is the greatest prime factor of 3105?
4 answers
asked by
francis
1,367 views
Find the largest three-digit number that can be written in the form 3^m + 2^n, where m and n are positive integers.
5 answers
asked by
Mr. Alexander
5,015 views
The units digit of a two digit number is 1 more than twice the tens digit. If the digits are reversed, the new number is 36 more
4 answers
asked by
Logan
2,442 views
I am a 2-digit number. My ones is 3 more than my tens and the sum of my digits is 11. What number am I ?
7 answers
asked by
joel
2,964 views
a. Two of the given numbers have square arrays. Make a conjecture about the number of factors for square numbers.
A. The number
4 answers
asked by
yvette
683 views
The lcm of two numbers is 40 one of the numbers is 5 what is the other numbers
6 answers
asked by
Angaly
2,259 views
Find how many numbers bigger than 2,999 and less than 8,999 can be formed from the odd digits, if no digits can be repeated
4 answers
asked by
My question wasn't answered....
2,869 views
Without using a calculator, decide which of these numbers divide into 2^5 * 3^9 * 7^2 * 13^5 8 17^4 * 19 with no remainder.
6 answers
asked by
Lola
707 views
The product of HCF and LCM of two numbers is 119. Find the two numbers if one of the numbers is not 1. Please help me to solve
6 answers
asked by
RIYA
5,345 views
find the square root off 12.25 by prime factorization
7 answers
asked by
maps
3,108 views
FIND THE LEAST NUMBER BY WHICH 21168 MUST BE DIVIDED IN ORDER TO YIELD A PERFECT SQUARE ?
5 answers
asked by
eman fatima
3,405 views
I am a prime number between 40 and 50. If you add one to me the sum of the prime factors of that composite number is 11. What
4 answers
asked by
Danielle
729 views
Given that the HCF of a pair of a different numbers is 8, find two numbers: when one number is in the 20s and the other in the
4 answers
asked by
Paul
407 views
give an example to show that a^2 congruent to b^2 mod n need not imply that a congruent to b mod n.
4 answers
asked by
Laura
1,380 views
Two consecutive odd primes, such as 11 and 13, are called a pair of "twin primes" how many pairs of twin primes are there
3 answers
asked by
anonymous1
1,262 views
I am thinking of a three-digit number. If you subtract 5 from it, the result is divisible by 5. If you subtract 6 from it, the
3 answers
asked by
Anthony
1,205 views
We call a natural number "odd looking" if all its digits are odd.How many 4-digit odd looking numbers are there?
3 answers
asked by
John
1,663 views
how many times is the H.C.F of 64 and 124 contained in their L.C.M
4 answers
asked by
Anonymous
552 views
What is the smallest integer I can multiply 315 by to get a perfect square?
3 answers
asked by
Radha
273 views
If the GCF (x, 36) is 4 and LCM (x, 36) is 288, then find the number x.
4 answers
asked by
Nati
575 views
what is the number feared by the pythagoreans
I googled "number feared by the Pythagoreans" and checked the 3rd entry. This is
1 answer
asked by
Anonymous
684 views
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